One person was killed and 22 were taken to area medical facilities to be treated for their injuries after Richard Rajos of the Bronx slammed his car into pedestrians walking on the crowded sidewalk of Times Square on Thursday.

Authorities are undergoing a complete investigation of the matter, but revealed that it wasn’t related to terrorism. Rajos was tested for being under the influence of alcohol and drugs at a medical facility, and it was determined he was high on synthetic marijuana (K2) at the time of incident, ABC 7 New York reported.

The one deceased victim has since been identified by authorities as 18-year-old Alyssa Elsman of Michigan. Her sister Ava was also injured from the crash.

The condition of the other victims is currently unknown.

Rajos’ 2009 Honda Accord came speeding down a busy corridor of Times Square, coming to a halt at the northwest corner of 45th Street and Broadway. It hit a median structure and stood tilted upward with its hood crumpled and its trunk open. Police rushed in to take Rajos into custody, who tried to flee from the scene.

Authorities said at a press briefing that Rajos was a former member the United States Navy and had a criminal background, including two prior drunken-driving arrests in 2008 and 2015.